/Engine/Source/Runtime/Engine/Classes/Animation/AnimSequence.h
Get Bone Transform of the additive animation for the Time given, relative to Parent for all RequiredBones
void GetBonePose_Additive ( [FAnimationPoseData](API\Runtime\Engine\Animation\FAnimationPoseData) & OutAnimationPoseData, const [FAnimExtractContext](API\Runtime\Engine\Animation\FAnimExtractContext) & ExtractionContext ) const